import React, {PureComponent} from 'react';
import PropTypes from 'prop-types';
import {
  Form,
  Input,
  Button,
  message
} from "antd";
import style from 'styled-components';
import PLoading from './PLoading'
import PCascader from './PCascader'
import bcx_utils from '../../common/bcx_utils'

const FormItem = Form.Item;
export const formItemLayout2 = {
  labelCol: {
    xs: {span: 24},
    sm: {span: 3}
  },
  wrapperCol: {
    xs: {span: 24},
    sm: {span: 21},
    md: {span: 21}
  }
};

/*
//this.props.init 事例
const init = {
  points: [116.396636, 39.869063],
  address: "北京市市辖区东城区-东城区中医药特色健康管理社区",
  area: [110000, 110100, 110101],
};
*/
export default class PMap extends PureComponent {
  state = {
    loading: true,
    area: [],//所在区域  省市区
    address: "",//详细地址
    points: [0, 0],//坐标
    ifSearch: false,//是否初始化过地址（根据父组件 init 信息）
  };

  static defaultProps = {
    ifProvince: true,
  }

  static propTypes = {
    areaChange: PropTypes.func,
    init: PropTypes.shape({
      points: PropTypes.array,
      address: PropTypes.string,
      area: PropTypes.array
    }),
    ifProvince: PropTypes.bool,//是否显示 省市区 ，并根据省市区 搜索地址。
  }

  /******************************生命周期******************************/

  componentWillMount = () => {
    this.loadMapScript();
  }
  componentDidMount = () => {

  }
  componentWillReceiveProps = (nextProps, newState) => {
    if ((this.props.init) && !this.state.ifSearch) {
      this.loading();
    }
  }

  //加载地图依赖
  loadMapScript = () => {
    // 高德地图
    const script = document.createElement("script");
    script.src =
      "http://webapi.amap.com/maps?v=1.4.4&key=9066916e054aa3083a6f081a2a9f9d7a";
    document.body.appendChild(script);

    const script2 = document.createElement("script");
    script2.src =
      "http://cache.amap.com/lbs/static/addToolbar.js";

    document.body.appendChild(script2);

    this.loading();

  };

  loading = () => {
    let _this = this;

    function nextStep() {
      return new Promise((resolve) => {
        setTimeout(() => {
          resolve("AMap" in window);
        }, 500);
      });
    }

    async function ajaxMap() {
      let ifComplete = false;
      for (var i = 0; i < 10; i++) {
        if (!ifComplete) {
          ifComplete = await nextStep();
        } else {
          if (ifComplete) {
            console.log("地图初始化中。。。");
            _this.initializeMap();
          } else {
            message.error("网络超时")
          }
        }
      }
    }

    ajaxMap();
  }

  //初始化生成地图
  initializeMap = (lng, lat) => {

    let config = {
      resizeEnable: true,
      zoom: 14,
    };
    if (lng && lat) {
      config = {...config, ...{center: [lng, lat]}}
    }

    this.map = new AMap.Map("gaodeMapContainer", config);

    if ("showInitialMarker" in this) {
      this.showInitialMarker = false;
    }
    //是否显示初始化的标注
    let showInitialMarker = this.showInitialMarker;
    if (showInitialMarker) {
      let marker = new AMap.Marker({
        icon: "http://webapi.amap.com/theme/v1.3/markers/n/mark_r.png",
        position: [lng, lat]
      });
      marker.setMap(map);
    }
    this.setState({loading: false});

    console.log(this.props.init);
    //根据 父组件 props 查找地点
    if ((this.props.init) && !this.state.ifSearch) {
      const {init: {points: [lng, lat], address, area = []}} = this.props;
      //判读是否包含省份信息
      if (address.includes("-")) {
        const [province, detail] = address.split("-");

        this.setState({
          points: [lng, lat],
          address: detail,
          area: province,
          ifSearch: true
        }, () => {
          this.search();
        });
      } else {
        this.setState({
          points: [lng, lat],
          address,
          area: [],
          ifSearch: true
        }, () => {
          this.search();
        });
      }

    }
  }


  pCascaderChange = (value, selectedOptions) => {
    this.setState({
      area: selectedOptions,
      address: ""
    });
  }

  //详细地址栏 change 事件
  addressChange = (para) => {
    let value = "";
    const area = this.changeAdress(this.state.area);

    if (Object.prototype.toString.call(para).slice(8, -1) === "String") {
      value = para;
    }
    else {
      value = para.target.value;
      //强制不可删除 省市区前缀
      if (value.length < area.length) {
        return;
      }
      if (!value.includes(area)) {
        return;
      }
      value = value.replace(area, '');
    }

    this.setState({address: value});

    return value;
  }

  //地区级联框地址转换
  changeAdress = (arr) => {
    if (!this.props.ifProvince) {
      return "";
    }
    if (typeof arr === "string") {
      return arr;
    }
    return [...arr].reduce((acc, item) => acc += item.label, '');
  }

  //搜索地址
  search = () => {
    const {area, address} = this.state;

    //判断选择省市区
    if (area.length === 0 && this.props.ifProvince) {
      bcx_utils.preventRepeatAsync((callback) => callback((resolve) => {
        message.warning('请选择省市区', 1.5, () => {
          window.setTimeout(() => {
            resolve();
          }, 500);
        });
      }))
      return;
    }

    //判断选择省市区
    if (area.length === 0 && address === "") {
      bcx_utils.preventRepeatAsync((callback) => callback((resolve) => {
        message.warning('请填写地址', 1.5, () => {
          window.setTimeout(() => {
            resolve();
          }, 500);
        });
      }))
      return;
    }

    const addressDetail = this.changeAdress(area) + address;

    this.showInitialMarker = false;

    this.mapSearch(addressDetail);
  }

  //地图搜索地址
  mapSearch = (addressDetail) => {
    const {AMap} = window;
    //搜索该地址，并生成标记点
    AMap.service('AMap.PlaceSearch', () => {
      //实例化PlaceSearch
      let placeSearch = new AMap.PlaceSearch();
      //TODO: 使用placeSearch对象调用关键字搜索的功能
      placeSearch.search(addressDetail, (status, result) => {
        const messageTip = () => {
          bcx_utils.preventRepeatAsync((callback) => callback((resolve) => {
            message.warning(`当前搜索地址：${addressDetail} 暂无记录`, 1.5, () => {
              window.setTimeout(() => {
                resolve();
              }, 500);
            });
          }))
        }
        //判断是否有结果
        if (Object.keys(result).length === 0) {
          messageTip();
          return;
        }

        if (result.poiList.pois.length === 0) {
          messageTip();
          return;
        }

        const {poiList: {pois: [{location: {lng = 0, lat = 0}, name}, ...other]}} = result;

        this.saveResult(lng, lat, name);//保存结果

        this.initializeMap(lng, lat);//重新构建地图
        //生成标记点
        // result.poiList.pois.map(({location: {lng, lat}, name}) => {
        //   this.addMarker(lng, lat, name);
        // });
        this.addMarker(...result.poiList.pois);

      });
    })
  }

  //生成标记点（气泡）
  addMarker = (...para) => {
    for (let {location: {lng, lat}, name} of para) {
      let marker = new AMap.Marker({
        icon: "http://webapi.amap.com/theme/v1.3/markers/n/mark_b.png",
        position: [lng, lat]
      });
      marker.setMap(this.map);

      marker.on('click', () => {
        this.saveResult(lng, lat, name);//保存结果
      });
    }
  }

  //保存结果，并调用 回调函数
  saveResult = (lng, lat, name) => {
    this.setState({
      points: [lng, lat],
    });
    //将第一个结果放在输入地址中
    const addressDetail = this.addressChange(name);

    if ("areaChange" in this.props) {
      const area = [...this.state.area];
      const province = this.changeAdress(area);

      if (!this.props.ifProvince) {
        this.props.areaChange([lng, lat], addressDetail);
        return;
      }
      //增加省市区前缀
      const cascader = area.reduce((acc, item) => acc.concat([item.value]), []);

      this.props.areaChange([lng, lat], addressDetail, province + "-" + cascader);
    }
  }


  render() {
    const {loading, area, address} = this.state;
    const {ifProvince} = this.props;
    const areaStr = this.changeAdress(area);


    return (
      <div>
        <AutoComplete>
          {ifProvince && (
            <div className="item">
              <div className="label">
                任务地点:
              </div>
              < div className="input">
                <PCascader
                  onChange={this.pCascaderChange}
                  defaultValue={area}
                  placeholder={"请选择所在区域"}/>
              </div>
            </div>
          )}
          <div className="item">
            <div className="label">
              详细地址
            </div>
            <div className="input search">
              <Input
                placeholder={"请填写详细地址"}
                value={areaStr + address}
                onChange={this.addressChange}
                onPressEnter={this.search}/>
            </div>
            <Button onClick={this.search} shape="circle" icon="search" type="primary"/>
          </div>
        </AutoComplete>

        {loading && <PLoading></PLoading>}
        <GaodeMapContainer style={{display: `${loading ? "none" : "block"}`}}>
          <div id="panel"></div>
          <div id="gaodeMapContainer"/>
        </GaodeMapContainer>


      </div>
    );
  }
}
const GaodeMapContainer = style.div`
  position: relative;
  #gaodeMapContainer{
    width:100%;
    // max-width:398px;
    height:300px;
  }
   #panel {
            position: absolute;
            background-color: white;
            max-height: 90%;
            overflow-y: auto;
            top: 10px;
            right: 10px;
            width: 280px;
            z-index:10;
        }
`;
const AutoComplete = style.div`
  .item{
    display: flex;
    margin-bottom: 14px;
    .label{
     width: 80px;
     line-height: 32px;
    }
    .input{
     flex-grow: 1;
     .ant-cascader-picker{
      display:block;
     }
     &.search{
      margin-right: 18px;
     }
    }
  }
`;
